tender for ring compost for houses (pr no. 157)-- 1 ring composting unit with the following specifications and sizes 2 a) ferro/cement ring of internal diameter 0.7 m, thickness 2.5 cm and height 0.5 m placed over a circular ferro cement slab of dia 0.75m and thickness 2.5 cm. the ring will have a hole of dia 2.5cm at the bottom for the leachate to flow out.b) circular ferro/cement cover slab of 0.75 m diameter and 2.5 cm thick with central circular hole of 0.30 m diameter to cover the ring. a lid which can be removed and refitted back for loading the waste into the ring and closing it tightly after loading the waste.infrastructure requirementa) two sets of circular ferro- cement rings resting on circular ferro-cement slabs and covered by another circular ferro- cement slab with provision for loading the waste from the top b) base layer with cow-dung (~5 kg) powder c) surgical hand gloves for handling the waste & manure